/*

 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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 */

/**

 * @test

 * @run testng ModuleReferenceTest

 * @summary Basic tests for java.lang.module.ModuleReference

 */

import java.lang.module.ModuleDescriptor;

import java.lang.module.ModuleReader;

import java.lang.module.ModuleReference;

import java.net.URI;

import java.util.Set;

import org.testng.annotations.Test;

import static org.testng.Assert.*;

@Test

public class ModuleReferenceTest {

    private ModuleReference newModuleReference(ModuleDescriptor descriptor, URI uri) {

        return new ModuleReference(descriptor, uri) {

            @Override

            public ModuleReader open() {

                throw new UnsupportedOperationException();

            }

        };

    }

    public void testBasic() throws Exception {

        ModuleDescriptor descriptor

            = ModuleDescriptor.newModule("m")

                .exports("p")

                .exports("q")

                .packages(Set.of("p.internal"))

                .build();

        URI uri = URI.create("module:/m");

        ModuleReference mref = newModuleReference(descriptor, uri);

        assertTrue(mref.descriptor().equals(descriptor));

        assertTrue(mref.location().get().equals(uri));

    }

    @Test(expectedExceptions = { NullPointerException.class })

    public void testNullDescriptor() throws Exception {

        URI location = URI.create("module:/m");

        newModuleReference(null, location);

    }

    public void testNullLocation() {

        ModuleDescriptor descriptor

            = ModuleDescriptor.newModule("m")

                .exports("p")

                .build();

        ModuleReference mref = newModuleReference(descriptor, null);

        assertTrue(!mref.location().isPresent());

    }

}